From which language does the word "Arsenal" come?

I know this piece of info as I am native arabic speaker: house of manufacturing. " Daar alsinaah"

So if it’s originally from Arabic, as stated in the explanation, then why is Arabic a wrong answer???

Bevilaquia, I love the REDS!!

I love the Gunners!

Total guess using no help, and I got it right. Talk about a mind trip...